Stebo Posted September 26, 2011 Share Posted September 26, 2011 The percentages don't mean much against last year. It just seems silly to change up what has worked for several Falls now. Plus the old maps divided up ice and snow where as these new maps just consider both the same, which doesn't always have an accurate representation as noted earlier this month were the snow was outpacing the ice compared to last year. These new maps wouldn't show that representation. Link to comment Share on other sites More sharing options...
Stebo Posted September 26, 2011 Share Posted September 26, 2011 Why bother pixel counting when FSU does it for you? This is comparing only to the last 15 years of climo and it isnt comparing to last year, that's why pixel counting does matter when comparing to last year. Link to comment Share on other sites More sharing options...
The_Global_Warmer Posted September 26, 2011 Share Posted September 26, 2011 I really miss the old maps. But I cant someone to do this if they do not want to. Link to comment Share on other sites More sharing options...
Harry Posted September 26, 2011 Share Posted September 26, 2011 I really miss the old maps. But I cant someone to do this if they do not want to. You mean these? http://www.natice.noaa.gov/ims/ Link to comment Share on other sites More sharing options...
The_Global_Warmer Posted September 26, 2011 Share Posted September 26, 2011 You mean these? http://www.natice.noaa.gov/ims/ I meant the pixel counting. I know where the maps come from since I use them in the sea ice thread. But thanks for trolling me. Link to comment Share on other sites More sharing options...
okie333 Posted September 27, 2011 Share Posted September 27, 2011 Pixel counting is back by popular demand. Giant gains everywhere. SNOW PIXEL COUNTS (total white minus 8000 [approximate number of white pixels that are map lines and not snow]) Yesterday: 778 Today: 1295 One year ago today: 1590 ICE PIXEL COUNTS (total yellow) Yesterday: 1459 Today: 1463 One year ago today: 1565 SNOW COVER (courtesy InstantWeatherMaps.com) 00Z: 3.34% 06Z: 3.47% 12Z: 3.68% 18Z: 4.01% Link to comment Share on other sites More sharing options...
The_Global_Warmer Posted September 27, 2011 Share Posted September 27, 2011 The warmest air for now will be over Europe and Western Russia. http://www.wetterzentrale.de/topkarten/fsavnnh.html great site for arctic computer model data. Link to comment Share on other sites More sharing options...
skierinvermont Posted September 27, 2011 Share Posted September 27, 2011 This is comparing only to the last 15 years of climo and it isnt comparing to last year, that's why pixel counting does matter when comparing to last year. As I said before it is easy to compare the the last two years in terms of areal coverage (same thing as pixels) using FSU. Last year had 4.0% coverage, this year 3.3%. Multiply the difference in percents (.7%) by 98.5 million sq miles and you have the number of sq miles this year has more or less than last year. And really is it so important that we know to the exact sq mile? All we really need to know is this year is below last year is above as you can quickly see from just glancing at this chart. Link to comment Share on other sites More sharing options...
BethesdaWX Posted September 27, 2011 Share Posted September 27, 2011 Pixel counting is back by popular demand. Giant gains everywhere. SNOW PIXEL COUNTS (total white minus 8000 [approximate number of white pixels that are map lines and not snow]) Yesterday: 778 Today: 1295 One year ago today: 1590 ICE PIXEL COUNTS (total yellow) Yesterday: 1459 Today: 1463 One year ago today: 1565 SNOW COVER (courtesy InstantWeatherMaps.com) 00Z: 3.34% 06Z: 3.47% 12Z: 3.68% 18Z: 4.01% 778 to 1295? Thats quite the spike. Link to comment Share on other sites More sharing options...
Nikolai Posted September 28, 2011 Share Posted September 28, 2011 I'm guessing we're over 1500 as of today? Decent gains in Nrn Canada. Link to comment Share on other sites More sharing options...
Nikolai Posted September 28, 2011 Share Posted September 28, 2011 OKIE YOU ARE ASLEEP AT THE WHEEL! HUGE gains today! While most of the gains will probably melt in Mongolia etc, it is nonetheless extremely impressive to have this much snowcover at this time of the year--we have not seen anything remotely comparable in the past decade +. Yesterday: Today: Link to comment Share on other sites More sharing options...
okie333 Posted September 29, 2011 Share Posted September 29, 2011 Enormous gains today, mostly in Asia; yesterday modest gains, mostly in Canada SNOW PIXEL COUNTS (total white minus 8000 [approximate number of white pixels that are map lines and not snow]) 9/26/11: 1295 9/27/11: 1413 9/28/11: 2117 9/27/10: 1692 9/28/10: 1840 ICE PIXEL COUNTS (total yellow) 9/26/11: 1459 9/27/11: 1454 9/28/11: 1488 9/27/10: 1606 9/28/10: 1628 SNOW COVER (courtesy InstantWeatherMaps.com) 9/27 00Z: 4.04% 9/27 06Z: 4.20% 9/27 12Z: 4.35% 9/27 18Z: 4.54% 9/28 00Z: 4.27% 9/28 06Z: 4.42% 9/28 12Z: 4.51% 9/28 18Z: 4.66% Link to comment Share on other sites More sharing options...
nj2va Posted September 29, 2011 Share Posted September 29, 2011 I looked through the thread and didn't see but can someone explain why we track this? Does this have a bearing on our winter? Link to comment Share on other sites More sharing options...
WxUSAF Posted September 29, 2011 Share Posted September 29, 2011 I looked through the thread and didn't see but can someone explain why we track this? Does this have a bearing on our winter? Fall northern hemisphere snowcover is very well correlated with the following winter. More snowcover = colder winter, less snowcover = warmer winter...in a nutshell. More science here: http://web.mit.edu/jlcohen/www/papers/Cohen_SaitoGRL03.pdf Link to comment Share on other sites More sharing options...
nj2va Posted September 29, 2011 Share Posted September 29, 2011 Fall northern hemisphere snowcover is very well correlated with the following winter. More snowcover = colder winter, less snowcover = warmer winter...in a nutshell. More science here: http://web.mit.edu/jlcohen/www/papers/Cohen_SaitoGRL03.pdf Thanks for the explanation and that paper. The graphs on the last page are pretty interesting! Link to comment Share on other sites More sharing options...
ArtRosen Posted October 1, 2011 Share Posted October 1, 2011 Any updates from okie? Link to comment Share on other sites More sharing options...
Riptide Posted October 2, 2011 Share Posted October 2, 2011 Any updates from okie? Bump. Link to comment Share on other sites More sharing options...
weathafella Posted October 3, 2011 Share Posted October 3, 2011 Looking at past years on this date, we are similar to 2008 and 2010. Link to comment Share on other sites More sharing options...
ArtRosen Posted October 4, 2011 Share Posted October 4, 2011 Where is okie?! Link to comment Share on other sites More sharing options...
skierinvermont Posted October 4, 2011 Share Posted October 4, 2011 From the FSU chart the snow cover started October just below average. Link to comment Share on other sites More sharing options...
The_Global_Warmer Posted October 5, 2011 Share Posted October 5, 2011 Ok, Someone count the pixels up Link to comment Share on other sites More sharing options...
Riptide Posted October 9, 2011 Share Posted October 9, 2011 Decent explosion of Sea Ice yesterday. Link to comment Share on other sites More sharing options...
skierinvermont Posted October 9, 2011 Share Posted October 9, 2011 according to FSU... snow and ice cover now a good bit below average Link to comment Share on other sites More sharing options...
WidreMann Posted October 9, 2011 Share Posted October 9, 2011 according to FSU... snow and ice cover now a good bit below average Just in the last few days and only because we haven't had a big increase in snowcover. At this time of year, they seem to come in batches, with plateaus in between. Link to comment Share on other sites More sharing options...
mitchnick Posted October 9, 2011 Share Posted October 9, 2011 Just in the last few days and only because we haven't had a big increase in snowcover. At this time of year, they seem to come in batches, with plateaus in between. plus, there's a 2-3 day delay with the maps there was quite a jump between Fri and Sat, so that may change by Tues or Wed Link to comment Share on other sites More sharing options...
BethesdaWX Posted October 9, 2011 Share Posted October 9, 2011 according to FSU... snow and ice cover now a good bit below average With what is progged no way that lasts long, unless the solutions change. Link to comment Share on other sites More sharing options...
skierinvermont Posted October 9, 2011 Share Posted October 9, 2011 There are gains on the GFS 5 day snow cover forecast, but the gains are really not that large for this time of year. Almost no snow falls west of 90E. initialization first, then 5 day: Link to comment Share on other sites More sharing options...
BethesdaWX Posted October 9, 2011 Share Posted October 9, 2011 There are gains on the GFS 5 day snow cover forecast, but the gains are really not that large for this time of year. Almost no snow falls west of 90E. initialization first, then 5 day: I can't see your images, but I was referring to the ensemble packages over the mid-long range. With a likely -AO winter, NH snowcover should generally average above normal as it has in the past several winters. Link to comment Share on other sites More sharing options...
phlwx Posted October 11, 2011 Share Posted October 11, 2011 2009, 2010, 2011 Link to comment Share on other sites More sharing options...
phlwx Posted October 11, 2011 Share Posted October 11, 2011 Here's the anomaly comparison: http://128.6.226.99/~njwxnet/png/daily_dn/2011283.png Link to comment Share on other sites More sharing options...
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